That RAM will only work with Macs from 2008 and earlier.
See below for the RAM guide.

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Have a look at Activity Monitor (Applications / Utilities /) and select All Processes and sort by CPU to see what the culprit may be.
Also check the "System Memory" tab to see what your "Page ins:", "Page outs:" and "Swap used:" are.

Staff Member

You can monitor RAM usage with Activity Monitor. What MacBook does she have? There have been quite a few and the RAM type depends on that. Installing the RAM is very easy, though, regardless of the model.

Wow, thank you! She already has 2GB RAM but at that price I'm not messing around, ordered right away... 4GB fast notebook memory for £15? Damn. One chip is nice too, should mean it'll slot in without a problem... unless you meant she currently has 2x1GB chips instead of 1x2GB, so I'll need to take one out?

Wow, thank you! She already has 2GB RAM but at that price I'm not messing around, ordered right away... 4GB fast notebook memory for £15? Damn. One chip is nice too, should mean it'll slot in without a problem... unless you meant she currently has 2x1GB chips instead of 1x2GB, so I'll need to take one out?

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